Improvement in piston-rod packings



N-PETERS, PHOTO-LITHOGRAFHER. WASNlNGTON. D C

UNITED STATES RICHARD MARTIN, OF BROOKLYN, NEW YORK.

IMPROVEMENT IN PISTON-ROD PACKINGS.

Specification forming part of Letters Patent No. 57,163, dated August14, 1866.

To all whom it may concern:

Be it known that I, RICHARD MARTIN, of Brooklyn, in the county of Kingsand State of New York, have invented a certain new and usefulImprovement in Steam-Packngs; and I do hereby declare that the followingis a full and` exact description thereof, reference being had to theaccompanying drawings, and to the let ters of reference marked thereon.

The object of my invention is to furnish a packing which may be made ata cheaper rate than the varieties now in use, and of any indeinitelength, and which shall possess the advantage of a diminution offriction by means ofthe use of a wire covering, and also the ad-Vvantage of a vegetable brous exterior as regards lubrication andresistance to the passage of steam through the stuffing-box.

The said invention consists of a steam-packing made in lengths andcovered with wire and hemp or other fibrous material combined to formsaid covering by being interwoven, intertwisted, or interbraided witheach other, so as to present a partly vegetable or lbrous and apartly-metallic external surface, as hereinafter more fully set forth,the wire, from its more unyielding nature, receiving the most of thefriction, and the vegetable ber lubricating the piston-rod and resistingthe passage of the steam through the stuffing-box.

Figure l is a view of a sample of packing made according to myimprovement and showing one mode of carrying out my invention. Fig. 2 isa cross section of Fig. l. Fig. 3 is a view of a sample of packing madeaccording to my improvement and showing another mode of carrying out myinvention. Fig. 4 is a crosssection ot' Fig. 3.

Fig. 1 represents a sample of packing embodying my invention, which ismade with a central strand, A, of rubber, hemp, or equivalent,surrounded by strands B, of hemp or other vegetable ber, alternatingwith similar strands C, covered or surrounded with wire,

said surrou nding strands B and C being coiled l or wound spirally aboutthe central strand, A, as represented in Figs. l and 2.

Fig. 3 represents a sample of packing einbodying my invention, which ismade with a central strand,D, of rubber, hemp, or equivalent, surroundedor wound with a woven vegetable material, E, and then covered with alayer of wire-cloth, F, the weft of which is formed of vegetable ber andthe woof of wire, as represented in Figs. 3 and 4.

In both samples the distinctive features of my invention areapparent-viz., the combination of wire and vegetable fiber in theexternal covering or outside portion ot' the packing, the wire, from itsmore unyielding nature, receivin g the most of the friction, andfurnishing the advantages of a metallic packing, and the vegetable berfilling the insterstices of the wire holding the lubricating substance,and insuring the constant and sufficient lubrication of the piston-rod,and which also leaves no openings about or between the wi res throughwhich the steam can lind its way, thus forming a much more serviceablepacking, made in lengths, and that can be manufactured at a less expenseand sold at a less price than the metal packings now in use.

I claim- A steam-packing made by combining with the body of said packinga covering consisting of wire and fibrous material interwoven,intertwisted, or interbraided together to form said covering,substantially as set forth.

' RICHARD MARTIN.

Witnesses:

JOHN YOUNG, THos. P. How.

